Ecophagy

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Ecophagy is a term coined by Robert Freitas that means the consumption of an ecosystem. It derives from Greek οἶκος (oikos) 'house, household' and φαγεῖν (phagein) 'to eat'.

Freitas used the term to describe a scenario involving molecular nanotechnology gone awry. In this situation (called the grey goo scenario) out-of-control self-replicating nanorobots consume entire ecosystems, resulting in global ecophagy.